What was the difference between the cultures of Athens and Persia?

How would europe benefit economically from greater unity

Which of the islamic empires (ottomans, mughals, safavids) were the most influential and why?

Which action by the us war department angered chief red cloud to the point that he refused to sign the treaty of fort laramie ? a) the killing of buffalo by the united states troops b) the appointment of troops to the powder river basin c) the burning of parts of the powder river basin d) the murder of chief red cloud’s wife